Box beam level



FIG. 1 is an isometric view of a box beam level incorporating our new design, wherein the portions in phantom form no part of the claimed design and the article is shown with a symbolic break in its length. The appearance of any portion of the article between the break lines forms no part of the claimed design;

FIG. 2 is a front elevation view thereof,

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof; and,

FIGS. 6 and 7 are end elevation views thereof. 

CLAIM The ornamental design of an box beam level, as shown and described. 